Smoking when cold, not when hot

[beatshack]

Hey, I have a strange thing going on with my car, and I really hope its not the head gasket. When the car is cold, I am getting more exhaust than normal, specially if I rev it up a bit. The smoke is fairly white. After I've driven the car around for a bit and its warmed up, and park it, there is no smoke at all. I can even rev it up while its neutral, no smoke.

Any clues!? I really hope its not the head gasket. Is there any way for me to tell if it is without doing a compression test?

P.S. this may or may not be related, but at around the same time I noticed the smoke, my thermostat failed open.

 

[DSMcamaro]

You sure its not just from the condensation in your exhaust? If you are that concerned about it I would just go ahead with a compression test.

 

[napkinthief]

Like stated before me, do the compression test, thats the only way to know if its your headgasket or not, unless you wanna pull your head and check it visually.

 

[toybreaker]

As long as the exhaust doesn't have a kind of sickly sweet smell, you're probably just putting out a lot of water vapor. I had a cheesmo aftermarket t-stat come apart and it just let coolant out to the radiator all the time. It took forever to warm up and put a lot of water vapor out the tailpipe as it warmed up. I put a new thermostat from the dealer in, and the steamin' went away. As a side bonus, fuel mileage went waaay up.
Good luck, and let us know how it turns out

I see you're in the frozen north, cold without the heater, eh?

 

[beatshack]

Yeah. It's more like spring right now though, and I the coolant temp only drops to around 60 degrees, so I still get heat.